1. A student has earnerd scores of 87,81,and 88 on the first 3of 4 test. Id the student wants an avearage (arithmetic means) of exactly 87, what score must she earn on the fourth test.
2. What is the average (arithemtic means) of 8,7,7,5,3,2,and 2?
3. Ben is making wooden toys for the next art sale. Each toy costs Ben $1.80 to make. If the sells the toys for $3.00 each. How many will he have to sell to make a profit of exactly $36.00?